package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {
    @Autowired
    private MinioClient minioClient;
    @Autowired
    private MinioProperties minioProperties;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        //判断桶是否存在
        boolean b = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());
        if (!b) {
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
            //给桶设置权限
            String policy = """
                    {
                      "Statement" : [ {
                        "Action" : "s3:GetObject",
                        "Effect" : "Allow",
                        "Principal" : "*",
                        "Resource" : "arn:aws:s3:::%s/*"
                      } ],
                      "Version" : "2012-10-17"
                    }
                    """;
            policy = policy.formatted(minioProperties.getBucketName());
            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName()).config(policy).build());
        }
        //将上传的文件名改良一下,避免出现文件名重复覆盖的情况
        //给文件前面加上时间好辨别
        String nowDay = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date());

        //设置两层路径
        String objectfName = nowDay+"/"+ UUID.randomUUID().toString().replace("-","")+file.getOriginalFilename();
        minioClient.putObject(
                PutObjectArgs.builder()
                        .bucket(minioProperties.getBucketName())
                        .stream(file.getInputStream(),file.getSize(),-1)
                        .object(objectfName)
                        .contentType(file.getContentType())
                        .build()
        );
         String url =String.join("/",minioProperties.getEndpoint(),minioProperties.getBucketName(),objectfName);

        return url;
    }
}
